Sewer-tank.



F. G. SMITH.

SEWER TANK.

APPLICATION FILED Nov.12.1914,

Patented Dec. 14.,` 1915.

mmm.

FRANK Gr. SMITH, OF JERSEY CITY, NEW JERSEY, ASSIGNOR TO CHRISTOPHER J.SMITH, OF JERSEY CITY, NEW' JERSEY.

SEWER-TANK.

Specification of Letters Patent.

patenten neem, lala.

Application filed November 12, 1914. Serial No. 871,760.

T 0 all whom t may concern:

Be it known that I, FRANK G. SMITH, a citizen of the United States ofAmerica, residing at Jersey City, in the county of Hudson and State ofNew Jersey, have invented certain new and usefu-l Improvements inSewer-Tanks, of which the following is a specification.

The present invention relates to improvements in sewer tanks, and isdesigned particularly for the purpose of providing a tank to be used inconnection with a sewer basin to distribute oil in the basin.

The primary object of the invention is the provision of means fordistributing oil upon the surface of water or sewage contained in asewer basin for the purpose of eliminating mosquitoes and other insects.For the purpose of eXterminating mosquitoes and other insects in sewerbasins, it is customary to pour oil upon the surface of the watercontained in the basin. This custom has proven a wasteful one for thereason that the oil which floats upon the surface of the water,overflows and is carried out through the outlet from the sewer basin,and then the oil supply must be replenished. By the utilization of mydevice, the waste is eliminated and a continuous and regulated supply ofoil is furnished to the surface of the. water or sewage in the basin.

The invention consists essentially in a tank which is suspended in novelmanner within the opening to the sewer basin, and in providing this tankwith means for distributing the oil contained therein, into the sewage.in the basin.

In the accompanying drawings I have illustrated one complete example. ofthe physical embodiment of my invention constructed according to thebest mode I have so far devised for the practical application of theprinciples of the invention, and in addition I have illustratedadjustable means for distributing the oil from the tank into the sewerbasin.

Figure 1 is a sectional view of a portion of a sewer basin with the tankof my invention applied thereto. Fig. 2 is a top plan view broken awayof the tank. Fig. 3 is a vertical sectional view on line 3 3, of Fig. 2.Fig. l is a detail view of a valve for regulating the distribution ofoil from the tank.

In the accompanying drawings I have exemplified my invention byillustrating in section a sewer basin as 1, which is walled 1n by themasonry work 2, and provided with the outlet 3, and a manhole 4;. I haveillustrated a metallic ring as 5 bounding the upper open end of themanhole 1, and this ring 1s designed to support the cover G, the ringand cover being of metal as usual. These parts thus described are ofusual or suitable construction, and are used for the purpose ofillustrating the applicability of my invention.

The tank 7, as illustrated in Fig. 1, is located in the upper end of themanhole 4. This tank preferably comprises a thimble 8 cylindrical inform, and closed at its upper end by the cover 9 where a flange 9 islocated and extends outwardly therefrom. An integral central tubularwall l0 forms an annular space 11 within the thimble 8. This space 11which is adapted to contain oil is termed the oil tank, and may belilled through the inlet 8 (Fig. The tubular wall extends from the flatbottom portion 12 of the tank to the top 9 and provides a predeterminedcapacity for containing the oil.

I have illustrated two small openings as 13-13 in the bottom of theannular space 11, and these openings are for the purpose of permittingthe contained oil to pass therethrough. Preferably the openings are sosmall that only a drop or two may pass therethrough at a time, and thusconserve the oil in the tank and prevent waste therefrom.

If preferred, the openings 13 may be dispensed with, and I may use anadjustable means for distributing the oil through the bottom 12. In Fig.4, a needle valve 14 is illustrated to regulate the opening 15 in thetank bottom 12, and this needle valve is supported at 16 in the cover 9.It is observed that the capacity of opening 15 may be regulated by theneedle valve, and in this manner the passage of the oil from the tank isgoverned and predetermined.

In use, the tank is placed in the manhole 4f with the flange 9 restingupon the the flange 17 of the cover ring 5. The oil is then placed inthe tank, or it may have been placed in there before the tank waslocated in position, and then the cover 6 is placed in position on topof the cover 9 and flange v 9 of the tank as shown in Fig. 1, and theoil slowly percolates or drops through the openingsl inthe tank. Whenthe valve 14 is used, the oil will pass through the opening 15 vand theoil flows upon the surface. Vof the sewage or Water 1n the basin, andveven though the surface of the Water in the basin should risesulieientlyhigh to permit `the tank.

From the 'above description taken in connection With my drawings,V it isevident that I have provided a device which fulfils the requirements setforth as the object and purpose of my invention.

I claim:

Atank comprising a cylindrical closed thimble having an upper outerflange and `a central lopen top cylindrical wall forming an open centerfor the tank and also Van annularreservoir, and vsaid reservoir formedwith a perforated bottom between said thimble and cylindrical Wall.

In testimony whereof I aiix my signature in presence of two witnesses.

FRANK Gr. SMITH Vtitnesses:

JOHN H. RIDLEY, ROBERT N. KINKEAD.

Copies 0f' this patent may be obtained for five cents each, byaddressing the Commissioner of latents,

Washington, IJ. C.

